What powers 
arpbooks.org?
Last seen Oct 2026 · 30 technologies across 16 categories
Analytics
CDN
CMS
Databases
Ecommerce
Font scripts
JavaScript libraries
Miscellaneous
PaaS
Page builders
Performance
Programming languages
Web servers
Webmail
Widgets
WordPress plugins
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 llms.txt removed
AI Crawlers
No AI crawlers blocked
Audience
- 77% desktop
- 23% phone
Canada
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.13 / 10 · ranked #490,503 of all domains
112 referring domains · OpenPageRank
Search traffic
250 est. monthly organic visits (US)
66 keywords in Google's top 30
Core Web Vitals
| LCP | 2.6 s |
| INP | 25 ms |
| CLS | 0.4 |
| TTFB | 1800 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- Weight: 5.1 MB · 78 requests
- WordPress theme: arp-books · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
From the homepage's own structured data (Oct 2026).
Infrastructure
- Registered Jan 2011 (15 years) via NameCheap, Inc., renews Jan 2027
- Hosted on DigitalOcean (142.93.145.118)
- DNS: Namecheap
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 2,037,264, 2 hosts
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Full technology history →
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Recent changes
- dropped Cloudflare Sep 2026
- dropped Cloudflare Bot Management Sep 2026
- dropped Twitter Ads Sep 2026
- detected Cloudways Jul 2026
- dropped Cloudways Jun 2026
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Gravity Forms Apr 2026
- detected Cloudways Jan 2026
- dropped Cloudways Dec 2025
- detected Twitter Emoji (Twemoji) Dec 2025